Insect-exterminator.



1.. M. RAWLS & A MILLER. INSECT EXTERMINATOR.

APPLlCATlON FILED JULYZI, 1914.

L1 @%,997; Patented May 30, 1916.

2 SHEETSSHEET 2- lnventorS Witnesses/ THEOPHILU S M. RAWLS AND ROBERT A. MILLER, 01? DUBLIN, TEXAS.

INSEGT- EXTERMI'NATOR.

Specification of Letters Patent.

Patented May 311, 1916.

To all whom it may concern Be it known that we, THEOPHlLUS M. RAwLs and ROBERT A. MILLER, citizens of the United States, residing at Dublin, in the county of Erath, State of Texas, have invented a new and useful Insect-Exterminator, of which the following is a specification.

The device forming the subject matter of this application is adapted to be employed for exterminating boll weevils and other insects which infest cotton, grain or other standing crops.

One object of the present invention is to provide novel means for producing a fumigating gas or compound and for distributing the same upon the crop.

Another object of the invention is to provide novel means whereby the crop may be sprayed, either with an insecticide compound, or with water to avoid an injury to the crop, if dry, by the action of the fumigating insecticide which is applied thereto.

Another object of the invention is to provide a novel driving mechanism operatively connected with the blower and one of the ground wheels of the vehicle, the construction being such that the blower may either be operated by hand or from the vehicle wheel.

Another object of the invention is to provide a device of this character having a pluralitv of discharge arms or nozzles adapted for vertical movement to clear stumps and like obstructions as the vehicle moves forwardly, resilient means being provided for restoring the discharge arms or nozzles to operative positions after the obstacle has been passed.

Another object of the invention is to improve the vehicle construction.

It is within the scope of the invention to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

With the above and other objects in view which will appear as the description proceeds, the invention resides in'the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without depicting an auxiliary coupling employed n connectlon with a vehicle structure; Fig.

6 is a longitudinal section showing a means whereby certain of the distributing elements of the device are operatively connected for individual swinging movement; Fig. 7 is a cross section of the structure shown in Fig. 6; Fig. 8 is a perspective view showing'a modified form of discharge member.

In carrying out the invention there is provided a vehicle, the same preferably embodying a main frame 1 and a supplemental frame 2. Secured as indicated at 3 to the side bars 7 of the main frame 1 is an upwardly arched rear axle 4 adapted to straddle the rows of standing cotton, corn or the like. 7 J ournaled on the ends of the upwardly arched rear axle 4 are ground wheels 5, the axle 4 being reinforced and sustained by frame connected braces 6. As indicated at 8, the extremities of the axle 4 are prolonged suiiiciently so that the wheels 5 may be adjusted toward and away from each other, to the end that the wheels may travel properly with respect to the standing crop. The side bars 7 of the main frame 1 are connected by cross bars 9, 10, 11 and 12. Longitudinal bars 14 connect the cross bars 11 and 12 and diagonal braces 15 connect the longitudinal bars 14 with the cross bars 11 and 12. Located between the longitudinal bars 14 and secured to the cross bars 11 and 12 are parallel bars 16. Connected with the cross bar 12 is a forwardly extended reach 17.

The supplemental frame 2 of the vehicle embodies side bars 18, an end bar 19 and a crossbar 20. Extended rearwardly from the cross bar 20 of the supplemental frame is a reach 21 detachably coupled as indicated pled as indicated at 23 to nal bars 7 of the main fr plemental frame 2 is pr suitable draft rigging ind front; axle 25 is of the a1 7 hereinbefore described an the crossbar 20 Journaled on thee axle 25 are ground wheel cated at 28, provision is eels 27 may be adjusted towa In each other for th pecified. Project axle 27 arerearwardl clined braces 29, merg segment 30 slidably r securedto the underside of t foregoing it wil n includes. .a f0 pon which the fumig mechanisms to be d after are mounte mental frame 2 main frame 1 as will be o circumstances, requisition, a Fig. 5,

bar'31 wh fro fore s From the the inventio such.

1 and the..1'ear'end unitedby means of av withlthe rear portio 1. ,The forward end connected With a on or with an hicle, so th anism carrie the field.

Fixed to and tudi nal bars 14 legs supporting a tan form and of any desire 36 being provided with a movable lid air inlet 38. .Projec the tank'36 is a valve 40, the pi the intermediat provided at its .en with projecting spr tion being such t treated at once by viously, the pipe length and more may be used, this oh the scope of the sk The tank 36 ma cide of any stand 'it may contain the spray heads 4 in advance of a mech hereinafter for disch heated gases proceedi the crop is dry, ob

hicle u ticide the coupling ltivator axle y other accessible p at the main frame la d. thereby may be ard or well know ater,yto be distr on the standing the longitudicharged through the spray heads 42 tends ame'l. The supto prevent a damage to the crop by the apovided with any plication thereto of the gaseous products icated at 24. The emanating from the furnace above menched construction tioned.

d is connected to The furnace may be of any desired form s of a fifth wheel but, as shown in Fig. 4, the same includes nds of the front a casing 43 supported upon the cross bars s 27, and, as indi-' 10 and 11, the casing 43 beingequipped with whereby the a lid 44 hingedly mounted as shown at 45 rd and away and coiiperating with a latch 46. In some e purpose hereinbeportion of the furnace, preferably in the ing from the front lid 44 there is an openingwhich is cony and upwardly introlled by a damper 47. Located in the ing into ahorizontal furnace casing-43 is a grate 48 upheld on in a guide 31 supports 49 projecting from the walls of the he reach 21. casing. At one side, the casing 43 of the 1 be seen that furnace is equipped with a hinged door 50, ur wheeled vepermitting the removal of the ashes, and coatingand in eoperating with the damper 47 to regulate escribed hereinthe draft through the furnace. Mounted ired, th sup lein the furnace casing 43 is a slidable ash etached from th .tray, 51 upheld by guides 52.

bvious and under 7 Mounted upon :the parallel bars 16 of the th re i ll d i t vehicle frame or otherwise supported is a g shown in d tail i blower 53. Communicating with the casing embod i t l of the blower 53 is a pipe 54 which enters id ar s 33 1 the casing 43 of the furnace above the grate e side arm 33 may b 48,-as indicated at 55 in Fig. 4. The pipe are 7 f the main fram 54 carries a damper 56 whereby the blast of the bar 31 y b proceeding from the blower 53 may be reguu-b h; 34 r th wi lated. The blower 53 includes a' shaft 57 17 0f th in frame disposed transversely of thevehicle frame. ofthe bar 31 m b Journaled for rotation on the shaft 57 ad (not sh wn) jacent its outer end is a loose sprocket wheel art f a v This sprocket wheel 58 may be coupled nd th m hup operatively with the shaft 57 through the drawn v r medium of a clutch 59. Extended around the sprocket wheel 58 is a sprocket chain g from the 'longi- '60, passed about a sprocket wheel 61 athe. cross bar 12 are tached to the extended portion 62 of the k 36 f nyd i ed hub of one of the rear ground wheels d-capacity, .the tank if deemed expedient, nace casing 43 is a discharge pipe 64, the 37 whi h may hav n inner endof which is in alinement both verting downwardly from :tically and horizontally with the inner end e 39 carrying a cut off of the pipe 54. Mounted on the rear end pe' 39 communicating with of the pipe-'64 is a socket 65. Upon one of rt'ion of a cross pipe 41 the side bars 7 located a bearing 66. In ds and near its center the bearing 66 and in the socket is held a ay heads'42, the 'construcpipe 67. Rotatable upon the inner'end of hatthree rows may be the pipe 67 is a coupling 68. Any suitable @thespray heads 42. Obmeans may be provided for uniting the 41 may be of any desired coupling 68 with the pipe 67. If desired,

Projecting from therear wall of the furpray heads 42 the pipe 67 and the coupling 68 may be proange being well within vided with annular flanges 69, engaged by a of a mechanic. y contain a liquid insecti- .of which are held together by securing den sort, or vices 71. A pipe 72 is held in a bearing 73 ted by on the other side bar 7 and the inner end V crops, of the pipe 72is connected with the coupling ailsm to bedesc-ri bed 68 in the manner hereinbefore described. arging upon the crop, The -coupling'68 carries a rearwardly exngfrom a furnace. If tended downwardly prolonged tubular disvlously, the water dis charge arm 74 and other'tubular discharge two part clamp 70, the constituent elements intense? I I m arms 75 are journaled on the ends of the pipes 67 and 72 respectively, for vertical swinging movement. Botatably mounted upon the ends of the arms 74 and 7 5 are laterally extended nozzles 76, the nozzles 76 being rotatable upon the respective discharge arms to enable the nozzles to discharge in any desired direction. Retractile springs 77 are united with the discharge arms 75 and 74 and are connected with any accessible portions of the vehicle frame such,

,for instance, as with the braces 6 and the cross bar 9. When the arms 75 swing rearwardly, springs 77 are put under tension, but when the arms 75 swing forwardly to a sufficient extent, the springs cease to exercise a retractile action, and constitute supports .for the arms, preventing the arms from swinging forwardly.

In practical operation, a fuel of any desired sort is placed upon the grate 48 in the casing 43. If the vehicle is not in motion, the clutch 59 is manipulated to disconnect the sprocket wheel 58 from the shaft 57. The shaft 57 under such circumstances no longer is connected with the driving ground wheel and then the shaft 57 may be rotated through the instrumentality of a detachable handle 63 which is applied to the outer end of the shaft 57. Thus, the blower 53 may be operated to create the necessary draft in the burner 43, while the vehicleis at rest. When the vehicle is in motion, the clutch 59 having been employed to couple up the sprocket wheel 58 operatively with the shaft 57, motion is imparted to the shaft 57 by means of the sprocket chain 60,.the blower being driven. In the furnace 43 is placed a fumigating compound of any desired sort, a mixture of sulfur and potassium nitrate being suitable for this purpose,

an acceptable proportion being 95% sulfur and 5% potassium nitrate. Any fuel may be used. By manipulating the damper 47 and the door 50, the amount of air entering the furnace casing 43 may be regulated, and thus any amount of air may be combined with the fumigating compound above mentioned. The mixture thus produced is blown through the pipe 64, by the action of the employed for moistening the standing crop,

prior to the application thereto of the gaseous products proceeding from the furnace 43. At times, notably when wheat and like crops are to be treated, there is employeda supplemental discharge head shown in Fig. 8. This head is in the form of a tube 80 having perforations 81. IT-couplings 82 are interposed in the pipe 80 and these couplings 82 may be connected with the outermost tubular arms 75, the intermediate arm 74 being removed or plugged. the vehicle moves'forwardly over the ground and when a stump or other obstruction passes between the wheels of the vehicle, such obstruction, engaging one or all of the tubular arms 7 5-7 4, will elevate the same, the springs 77 being put under tension. So soon as the obstruction has been passed, the springs 77 will operate to restore the arms 74 and 75 to the normal positions shown in the drawings.

Having thus described the invention, what is claimed is In a device of the class described, a vehicle including a frame; a cross pipe mounted on the frame; downwardly extended tubular arms communicating with the cross pipe and mounted to swing vertically; springs connecting the tubular arms with the frame; and mechanism for discharging an insecticide into the cross pipe, the springs being adapted to yield, as the arms swing rearwardly, and being adapted to act as supports for the arms, when the arms swing forwardly a predetermined amount.

In testimony that we claim the foregoing as our own, we have hereto affixed our signatures in the presence of two witnesses.

THEOPHILUS M. RAWLS.

ROBERT A. MILLER.

Witnesses:

Ros'r. PEACOGK P. A. BURNETT.

When 

